最好的爱情，必然有遗憾

最好的爱情，必然有遗憾
There will always be some regret, even in the purest and best love.

最精简的：
Pity can make love perfect.

或是这个也不错：
A perfect love can't do without sorrow/regret.

喜欢翻译这种句子，有挑战性。

The best love, has the regret inevitably

The deep love, the big regret.

Regreats in the perfect love are inevitable~ 中文的意思是：遗憾在完美的爱情中是不可避免的~~

The best love, has inevitably regretted